1 / 14

HPGe detectors technologies

HPGe detectors technologies. Dzhelepov Laboratory of Nuclear Problems. Participants : Agnieszka Kapelak , UAM Poznań Michalina Komorowska, UW Warszawa Paulina Staszewska, UAM Poznań Supervisor : mgr inż. Dariusz Borowicz, IFJ PAN Kraków, DLNP JINR.

yeo-fernandez
Download Presentation

HPGe detectors technologies

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HPGedetectorstechnologies Student Practice in JINR Fields of Research - HPGe detectors technologies

  2. Dzhelepov Laboratory of Nuclear Problems Participants: • Agnieszka Kapelak , UAM Poznań • Michalina Komorowska, UW Warszawa • Paulina Staszewska, UAM Poznań Supervisor: mgrinż. Dariusz Borowicz, IFJ PAN Kraków, DLNP JINR Experimental Research Department of Nuclear Spectroscopy and Radiochemistry Student Practice in JINR Fields of Research - HPGe detectors technologies

  3. High PurityGermaniumDetectorsbasics and application • ƴ - rayspectroscopy • Nuclearmedicine • Environmental monitoring • Verygood energy resolution Student Practice in JINR Fields of Research - HPGe detectors technologies

  4. LiquidNitrogenCooling Variety of HPGecryostats and Dewarvessels Student Practice in JINR Fields of Research - HPGe detectors technologies

  5. Differenttypes of HPGedetectors Planardetectors • For detectinglowenergies • ≤ 150 keV • Applied for polarizationmeasurments • Smallelectricalcapacitance • example 2 pF for X-raysdetectors (typically 16 mm diameter and 5 mm thick) Student Practice in JINR Fields of Research - HPGe detectors technologies

  6. Differenttypes of HPGedetectors Coaxialdetectors • For higherenergies, up to severalMeV • Largervalues of electricalcapacitance ̴20 pF • Commonlyusedcrystalsize - 6 cm indiameter Student Practice in JINR Fields of Research - HPGe detectors technologies

  7. Specialtypes of HPGedetectors Specialdetector for lowenergies • Largevolume50 cm³ • Electricalcapacitancelowerthan 1 pF! • detectionthreshold250 eV! Student Practice in JINR Fields of Research - HPGe detectors technologies

  8. From materials to devicesGermaniumdetectorstechnologies Cuttingthecrystal, making of thep-njunction Cutting out theprotecion ring Evaporation of Au on p-njuntionside Student Practice in JINR Fields of Research - HPGe detectors technologies

  9. Germaniumdetectorstechnologies Etching and oxidizing for an ohmic contact. Temperatureevaporation of Pd and Au upon a prepared surface. Final etching and protecting the surface from theenvironment. Student Practice in JINR Fields of Research - HPGe detectors technologies

  10. Making of thedetectors BEFORE AFTER Student Practice in JINR Fields of Research - HPGe detectors technologies

  11. Detectorscharacteristics and measurments The higher possible voltage value, the better charge collection and better time resolution Voltage – Capacity characteristic Voltage – Current characteristic • U₀ - voltagevalue for whichthefullvolume of thedetectorisactive Student Practice in JINR Fields of Research - HPGe detectors technologies

  12. Detectorscharacteristics and measurments Energy resolution measurments for HPGe Student Practice in JINR Fields of Research - HPGe detectors technologies

  13. DifferentsetupsequippedwithHPGe GAMMASPHERE GASP JUROGAMM EAGLE EUROBALL Student Practice in JINR Fields of Research - HPGe detectors technologies

  14. Thanks for yourattentionSpecialthanks to: • Dr Stanislav Z. Pakuliak (BLTP JINR, Dubna) • Dr Władysław Chmielowski (JINR, Dubna) • Dr hab. Roman Zawodny (UAM, Poznań) • mgr inż. Dariusz Borowicz (IFJ, Kraków / JINR, Dubna) Student Practice in JINR Fields of Research - HPGe detectors technologies

More Related